Quenching Crack of Seamless Steel Tube
Quenching cracks may occur in seamless steel tubes if the heating temperature is too high, or the heating time is too long, or the heating temperature is seriously uneven. If the chemical composition of seamless steel pipe segregates, the seamless steel pipe may mix and easily cause quenching cracks.


Overheating or Overburning of Coal Seam Steel Tubes
Overheating or overheating of seamless steel tube may occur if the quenching heating temperature is too high or the heating time is too long. In serious cases, seamless steel pipe will collapse.


Surface decarbonization or severe oxidation of seamless steel tubes
When seamless steel tube is heated, due to improper control of heating temperature and time or misalignment of air-fuel ratio regulation, the surface of seamless steel tube is seriously decarbonized or oxidized.